DRV8846RGET

Overview

The DRV8846RGET is a bipolar stepper motor driver manufactured by Texas Instruments, designed for applications requiring integrated control and power stages. It features a dual H-bridge output configuration with four half-bridges, utilizing power MOSFET technology. The device supports Step/Direction interfaces and offers microstepping resolution from full step to 1/32. It operates within a supply voltage range of 4V to 18V and delivers an output current of 1.4A per channel. The component is housed in a 24-pin VQFN package measuring 4x4mm with a height of approximately 1.00mm. It functions across a junction temperature range of -40°C to +150°C.

Feature Summary

• Fully integrated driver combining control logic and power stage for simplified design
• Supports microstepping resolutions ranging from full step to 1/32 for smooth motion control
• Dual H-bridge architecture enabling independent control of bipolar stepper motors

Applications

• Camera lens positioning systems
• Printer and copier mechanisms
• Projector focus and zoom actuators
• Automated office equipment

Procurement Notes

Verify the specific suffix RGET against the official datasheet to confirm package type and tape/reel specifications. Confirm end-of-life status as distributor data indicates potential obsolescence. Ensure compatibility with existing PCB footprints for the 24-VQFN form factor. Validate thermal management requirements given the high junction temperature rating. Cross-reference manufacturer part numbers to avoid substitution errors during procurement.

Selection Notes

Select this component when designing compact motion control systems for printers or cameras. It is suitable for space-constrained environments due to its small QFN footprint. Choose this driver for bipolar stepper motors requiring up to 1.4A continuous current. Consider the 1/32 microstepping capability for applications demanding high positional accuracy. Verify that the system voltage falls within the 4V to 18V operating range before integration.

Part Context

The DRV8846 belongs to Texas Instruments' family of low-voltage dual H-bridge motor drivers. It is engineered specifically for highly integrated stepper motor solutions in consumer electronics. The device simplifies design by integrating the microstepping divider and driver circuitry. It competes in the market for compact motor control ICs used in imaging and automation devices.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Consult the official TI datasheet for recommended alternatives or updated product recommendations.